Drain pan



Patented Sept. 16, 1941 UNITED STATES PATENT OFFICE DRAIN PAN George Raymond Lindahl, Los Angeles, Calif. Application November 19, 1940, Serial No. 366,305

6 Claims.

This invention relates to drain pans for use in connection with refrigerating units, one of the objects being to provide a drain pan which, when supported beneath the evaporator of a refrigerating or cooling apparatus, wil1 operate efiiciently 'to collect water gravitating from the evaporator and, at the same time, present the minimum of restrictions to the movement of air from the 0011 er evaporator.

A further object is to provide a drain pan permitting free flow of air sideways as well as downwarclly whereby the air can move more rapidly from the evaporator and drain than has been possible heretofore so that lower temperatures are insured withn the refrigerator or other enclosure containing the improvement.

A urther object is to provide a drain pan the construction of which results in increased efliciency of the evaporator due to the fact that the free and rapid downward movement of the air from the evaporator acts to accelerate the upward movement of the warm air displaced thereby, thus resultng in more air passing over the evaporator and more heat being extracted from the structure in a given length of time than has been possible heretofore.

A stil1 further object is to provide a drain pan the parts of which are assembled readily and are held in proper position without the use of screws, beits, insulators,

quickly Without the use of out requiring the services special tools and withof skilled mechanics.

In the accompanying drawing the preiened form of the invention has been shown.

top plan view, portions being an end elevation, portions being troughs be kept lengths desired in order tongues 9 and l0 and hold. the adjacent parts of the pan elements to produce pans of the proper proportens. After these parts have been out to the proper lengths some of them are inserted. longtudinally inthe slots 6 in strips I so as to be supported in these s1ots and. across the upper portons of the recesses 3 with ther concave aces uppermost. Thereafter other strips of the material are s1id 1ohgtudinally into the slots 1 S0 as to be in engagement with and supported by all of the bars l below and parallel wth theupper strps or troughs Il a nd likewise bridgng the recesses, 3. Additiorial stripsof 'the materiai are then inverted so that their permost and these strips are nserted longit1- dinally into the s1ots 8 ofthe bars I. 'Iherespective ends of the troughs anpi baffles are pp sitoned in the same plane and. after all of the parts have thus been broughttggether t 1 e as semb1y is completed by sightly offsettpg the so as to cause them to pinch such as hrein convex surfaces will be up space is 1eft in the refrigerator for st0rage purtageous because in practice it has been ound that no water of condensation wi1l accumulate on the bottoms due to the fact upper and lower means Which bringsthe temperature of the bottom troughs to consequently, the lower troughs will not sweat under the most adverse conditions. It might be stated, furtherrnore, that because of this advantageous result, the pan can be supportecl more close1y to the evaporator Without sweatng than ean ether construction and, as a result, more What is claimed is:

1. A1 drainpan including superposed spaced trgpighs arranged iniaterally spaced pars, the upper troughs havng drain openings, arcuate bafies bridgng the spaces overlapping the upper troughs, spaced bars enageibynd connectin the sideedges of the trbughsand baffles', there being recesses in the extending upwardl3r gaged by and conneiting bars brciged by the trolighs; and eorncti0ns be- 3, A drain pan including spaced bars having spaced re 3esses extending thereinto roxn their e esses and. downwardly divergng siots in the tep edges of the bars, superposed the recesses and havin g theirsde edges seated vithin the slots extencing irornthe recesses in? v rteg1 arcuate bafiies havng their side;cges seatgi in the top s1ts,

spa'eed recesses extendin'g thereinto from their w "ede the warrn air wil}- be and the lots extendinginto sad edg es eqeper-.

atint provideber daple gripping tongnes.

overlying and paced from of the 1ower troughs. This is that air circulatng between the troughs acts as an insuiating that of the falling air stream and,

between said pairs and 1ower edges, there beng pars cf diverging slots engagement with and supported by al] of the bars, extending upwardly from the sides of the recesses said bafles bridging the spaces between the reand. d0wnwardly diverging s1ots in the top edges cesses and havng ther side edges overlying and of the bars, superposed troughs brdging the respaced from the acljacent troughs, there being cesses and havng ther side edges seated wthin 5 drain openings in the upper troughs, and means the slots extendng from the recesses, inverted for connecting the bars and engaging a stand arcuate bafles having ther side edges seated in support.

the top slots, said troughs and bafies being in GEORGE RAYMOND LINDAHL. 

